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Newsgroups: comp.os.386bsd.questions
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From: pbd@runyon.cim.cdc.com (Paul Dokas)
Subject: Re: "ISA straxintr ****ff", what's this?
Organization: ICEM Systems, Inc.
Date: Sun, 25 Apr 1993 18:05:09 GMT
Message-ID: <C61wwL.JyA@raistlin.udev.cdc.com>
References: <1993Apr24.171437.15269@delos.stgt.sub.org>
Sender: usenet@raistlin.udev.cdc.com (News poster)
Lines: 64
In article <1993Apr24.171437.15269@delos.stgt.sub.org>, migieger@delos.stgt.sub.org (Michael Giegerich) writes:
|> Hi,
|>
|> when booting from my hd I get messages like:
|>
|> ISA strayintr 1ff
|> ISA strayintr 4081ff
|> ISA strayintr 4081ff
|> ISA strayintr 81ff
|> ISA strayintr 4080ff
|> Too many ISA strayintr not logging any more
|>
|> These messages appear after I switched to a newly compiled kernel
|> (386bsd-0.1 and patchkit-0.2.3).
|> The system itself "feels" normal :-) ie. no crashes, panics,
|> coredumps etc.
I also started getting these messages. But not until I swapped in
a new motherboard. Everything worked fine (read: I didn't get
these messages) with my old motherboard. My new motherboard however
gives these strange messages.
old motherboard: OPTI localbus, SIS chipset, 486dx33, 8MB DRAM,
256K 25ns cache
new motherboard: VESA localbus, SIS chipset, 486dx33, 8MB DRAM,
256K 20ns cache
The only things that are different are the actual motherboards
and the cache. Everything else is the same (DRAM, processor,
all ISA cards, all disk drives, montior and case).
For a pointer, these "ISA strayintr" messages are coming out of
/sys/i386/isa/isa.c in isa_strayintr(). There is a large comment
from rgrimes stating that lots of stray interrupt #7s is an
indication of a bad motherboard.
I'm hoping that these messages are not a hardware problem but
rather caused by one of the following:
1) I've noted that these messages always appear right after
probing the npx. Perhaps this is the problem as I'm still
using the original npx code. I'll give npx0.5 a try on monday
and see if this fixes the problem.
2) perhaps the speed of the bus is a problem. With my new
motherboard's BIOS, I can set the speed of the ISA bus. It's
currently at 7.xxMHz. I'll try some others.
3) perhaps it's one of my io cards is marginal. It's works fine
with the old motherboard, but is not quite right with the new
one. I've got: a generic multiIO card (IDE, floppy, 2serial,
1parallel), adaptec 1542B, wd8003 ethernet card, a 2 port
serial card (1 16440 and 1 16450) and an 8 port serial card
(8 16550s).
Any help is appreciated!
-paul
--
#include <std.disclaimer>
#define FULL_NAME "Paul Dokas"
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